These belong to a local friend/audio engineer of mine. He has been collecting for quite a while. This is the second largest RCA mic collection in the country, and most likely in the world. All of the speakers in the picture, including the HUGE speaker that the mic collection is sitting on top of are extremely rare, and extremely beautiful JBL speakers.
I'll leave the full collection picture full size so that you can zoom in. These were taken with an iPhone, so they aren't the best quality.